Samuel gkeen



(No Model.) 2 Sheets-Sheet 1.

S. GREEN.

DASH POT FOR STEADYING MULE GARRIAGES.

No. 604,563. Patented May 24,1898.

(No Model.) 2 SheetsSheet 2. I S. GREEN. DASH POT FOR- STEADYING MULE GARRIAGES.

No. 604,563. Patented May 24,1898.

Woinesses' yflnid? 7 Warren Smarts Parent @rrrcn.

SAMUEL GREEN, OF MOSSLEY, ENGLAND.

DASH -POT FOR STEADYlNG MULE CARRMGES.

SPECIFICATION forming part of Letters Patent No. 604,563, dated May 24, 1898.

Application filed May 22,1897. Serial No. 637,784. (No model.) Patentedin England May 24, 1895, No. 10,259.

To aZl whom it may concern.-

Be it known that I, SAMUEL GREEN, asubject of the Queen of Great Britain, residing at Mossley, in the county of Lancaster, England, have invented certain new and useful Improvements in Dash-Pots for Steadying Mule-Carriages, (for which I have obtained a patent in Great Britain, No. 10,259, dated May 24, 1895,) of which the following is a specification.

This invention relates to improvements in mules for spinning, and has for its object to provide a carriage-steadier constructed on the dash-pot principle for the purpose of preventing the rebounding or springing out of mule-carriages from the rollers at the finish of the inward run-a fault common to mules causing breakage and thin places in the yarn, especially at the ends of mules, and one of the causes of snarls, directly because the twist runs into the thin strained places in the yarn, forming snarls, and indirectly because minders in the endeavor to avoid breakage and straining of yarn allow too much slack yarn between rollers and spindle-points to start the outward run of mule with. I attain this object by the mechanism illustrated in the accompanying two sheets of drawings, in whioh- Figure 1, Sheet I, is a longitudinal section, Fig. 2 a plan, and Fig. 3 a side view, of my improved carriage-steadier. Fig. 4, Sheet II, is an end View, and Fig. 5 a plan, of a mule, showing my improved steadier applied thereto.

Similar letters refer to similar parts throughout the several views.

The steadier-two of which are required for a mule, one near each end, say, between second and third slipsis secured to the floor underneath the carriage when the carriage is close to the back stops, as shown in Sheet II.

a is an iron box or oil-well about half-full of oil when at work.

I) is an iron plate fitting easily the lower or working part of the box and having, with its arm 0, a center of motion in stud d. In the stud c, passing through arm 0, is the center of motion of a catch-lever f, which is held up against a projection g of the arm a by a spring h.

Attached to the mule-carriage in front is a bar 1', projecting underneath the carriage, which bar, when the carriage terminates the inward run, depresses and passes over the catch f, as shown in dotted lines, Fig. 1, and is caught by it. At this point the steadier begins to operate by opposing whatever tendency there is in the mule carriage to rebound the resistance offered by atmospheric pressure to the plate I), which plate can only lift and yield to the force or impact of the rebound of the carriage against the catch f, according to the rate at which the oil in the box a can pass below the plate I), which rate is regulated by port-holes 7c in the plate I), bored and tapped for set-screws to be inserted or removed, according to flow of oil required. To explain this operation, let it be supposed that a sufficient force be applied to the catch f by the rebounding of a mule-carriage against it to lift the plate 1) without any oil being allowed to pass from the upper side to the lower side during the lifting of the plate. It is obvious that in that case the cubic space under the plate would be increased and the increase of space would be a vacuum, with the result that the plate I), which is five inches square, would sustain atmospheric pressure expressed in pounds by 5 X 5 X 15 375, and the effect of this pressure would be more than doubled in the catch f, and would exceed 375x 2:750 pounds, because in the arm 0 there is a leverage of more than two to one. In the plate I), however, several holes are bored to allow the oil to escape from the up per side to the lower side of the plate during the lifting of the plate by the force of a mulecarriage against the catch f at commencement of outward run of the carriage. Now it will be evident that the amount of resistance offered by the catch f to the impact of a mulecarriage against it will depend upon the size and number of holes in the plate I) and upon the density or body of the oil-in other words, upon the freedom with which the oil can escape from the upper side to the lower side of the plate while the plate is lifting out of the bottom part of the box a and yielding to the impact of the mule-carriage against the catch f. The adjusting of the steadier therefore consists in fixing upon the number of holes to be open in the plate Z) which are necessary and not more than necessary to allow the oil to escape from the upper side to the lower side of the plate during the lifting of the latter by the force of the carriage against the catch f without offering material resistance to the carriage when commencing its outward run at the proper speed. When thus once adjusted, although the steadier offers no material resistance to the normal rate of outward movement of a mule-carriage, which affords time for the escape of oil from the upper to the lower side of plate, yet any increase in the rate of outward movement of carriage against the catch resulting from a rebound meets with correspondingly-greater resistance and is retarded, the carriage proceeding on its outward run at the normal rate according to the limit which has been fixed for the rate of escape of oil from the upper to lower sides of plate, because the escape of oil through the holes in the plate is a question of time and but slightly affected by an increase in the force of a rebound of a mule-carriage against the catch, andwhatever be the force or momentum of the rebound of a carriage against the catchfshort of seven hundred and fifty pounds,which is an ample limit, such rebound would be counteracted by this steadier, which constitutes a fluid-buffer automatically controlling the rate of movement of a mule-carriage at commencement of outward run and so preventing the rebound or jerking out of the carriage to the detriment of yarn.

The resistance oflferedto the rebound of the mule carriage is only instantaneous and ceases with the lifting of the plate 6 from its seat, which allows a free flow of oil, and therefore the outward traverse of the carriage is not delayed.

The catch f while moving outward with mule-carriage has also a downward movement which allows the carriage-bar i to clear it, as shown in Fig. 3, and then the plate I) settles by its own weight, bringing the catch f into position for the next inward run of the carriage, when the operation is repeated, as shown in full lines in Fig. 1.

This invention contributes to an increase of production of yarn by removing the necessity for taking the mule in gear slowly and so losing time as a precaution against rebound- 5o ing of the carriage and consequent damage to yarn.

This invention lends itself to economy of power by removing the necessity for taking the mule in gear slowly, because when a mule is allowed to go in gear more freely-that is, when not too much checked or restrained by scroll-bandsthe winding finishes with the tin rollers and spindles more quickly, and consequently less power is absorbed in overcoming their inertia and getting up the speed for the outward run of the mule each draw. Also in the transmission of less power in starting out the mules each draw there is less wear and tear of strapping and rim-banding, less liability for straps to slip and so lose time, and less liability for rim-bands to slip and make weak yarn for want of twist.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. A carriage-steadier for mules for spinning, consisting of an iron box a containing fluid and a plate I) formed with perforations 7c and an arm a hinged to the outside of the said box, the mule-carriage having projections 2' fixed thereto, the said arm being adapted to catch the mule-carriage projections 1; at the end of the inward travel and the said fluid to check the rise of the said plate and thus control the speed of the mule-carriage at the commencement of its outward travel, all substantially as and for the purpose set forth.

2. In combination with an-iron box a containing fluid and a movable plate therein formed with an arm 0, a lever f hinged to the said arm and supported by a spring, which lever is adapted to be depressed by and catch a projection t on the mule-carriage at the end of its inward travel, all substantially as and for the purpose set forth.

In testimony whereof I have affixed my signature in the presence of two witnesses.

sAMUEL GREEN.

Witnesses:

ALFRED BossHARDT, STANLEY V. BRAMALL. 

